Shen Zhao, the unpopular legitimate son of the Hou family, whose mother died young, his father was neglected, and his stepmother made things difficult for him, relied on forbearance and embroidery skills to survive in a side courtyard. The arrival of new teacher Lin Zhixia breaks the calm - he appears gentle, but in fact he sneaks into the Hou Mansion to find out the truth about his father being framed and killed. From temptation to trust, the two faced together their stepmother's falsified account books, framed embroidery, and pressure from the clan. Amidst the swords and shadows of the house fight, they gradually became each other's salvation, and finally uncovered an old injustice, defended the Hou Mansion, and kept the promise of a lifetime together.
